3r^4-147=0

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Solution for 3r^4-147=0 equation:


Simplifying
3r4 + -147 = 0

Reorder the terms:
-147 + 3r4 = 0

Solving
-147 + 3r4 = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '147' to each side of the equation.
-147 + 147 + 3r4 = 0 + 147

Combine like terms: -147 + 147 = 0
0 + 3r4 = 0 + 147
3r4 = 0 + 147

Combine like terms: 0 + 147 = 147
3r4 = 147

Divide each side by '3'.
r4 = 49

Simplifying
r4 = 49

Reorder the terms:
-49 + r4 = 49 + -49

Combine like terms: 49 + -49 = 0
-49 + r4 = 0

Factor a difference between two squares.
(7 + r2)(-7 + r2) = 0

Subproblem 1

Set the factor '(7 + r2)' equal to zero and attempt to solve: Simplifying 7 + r2 = 0 Solving 7 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + r2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + r2 = 0 + -7 r2 = 0 + -7 Combine like terms: 0 + -7 = -7 r2 = -7 Simplifying r2 = -7 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-7 + r2)' equal to zero and attempt to solve: Simplifying -7 + r2 = 0 Solving -7 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + r2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + r2 = 0 + 7 r2 = 0 + 7 Combine like terms: 0 + 7 = 7 r2 = 7 Simplifying r2 = 7 Take the square root of each side: r = {-2.645751311, 2.645751311}

Solution

r = {-2.645751311, 2.645751311}

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